sandy hook scholars. but police kept one elementary school closed as a caution after they received threats. >> we will always be worried. >> reporter: children at sandy hook have not yet returned to school. when they do it will be at a school to the nearby town of monroe. in newtown, connecticut, randall pinkston, wjz eyewitness news. >> investigators say the gunman, 20-year-old adam lanza, had fired guns at shooting ranges during the past several years, but there was no evidence he did so recently as practice for the rampage. >>> well, of course everyone is asking what can we do to stop these mass killings. wjz's complete coverage continues. adam may with more on the calls to improve mental health care. adam. >> today's experts in that field say if we do not do more to improve mental health care in this country another school massacre is pretty much guaranteed. it's been widely reported school shooter adam lanza suffered some kind of personality disorder, but it's still unclear if his family ever tried t